The Lakota are part of a confederation of seven related Sioux tribes, the Očhéthi Šakówiŋ, or "Seven Fires Counsil ". They speak the Lakota, the westernmost of the three Siouan language groups, and currently occupy lands in what is modern-day North and South Dakota. In turn, the Lakota are themselves subdivided into seven bands, or "sub-tribes":